Manufacturing method of fulvic acid full-water-soluble granular functional fertilizer

Abstract

The invention relates to a preparation method of fulvic acid full-water-soluble granular functional fertilizer, and belongs to the field of fertilizer production. The preparation method comprises the following steps: grinding fulvic acid raw powder into 200-600-mesh fine powder; adding the mixture, urea, ammonium nitrate phosphorus and fully water-soluble potassium sulfate into a reaction kettle; the concentrated molasses fermentation liquor and the chelated trace elements are injected for first stirring and mixing; sequentially adding polyglutamic acid, nucleotide, polypeptidase and chelated calcium, and carrying out second stirring and mixing; and finally, carrying out dry granulation. According to the method, a specific two-step mixing process is combined with an active component adding sequence, so that the synergistic effect of all functional components is remarkably improved. The prepared fertilizer is good in water solubility and high in organic matter content, the granular structure of soil can be effectively improved, chelated trace elements of the fertilizer are more beneficial to crop absorption, and the fertilizer has the outstanding effects of improving the fertilizer efficiency, resisting diseases and increasing the yield.

Description

Technical Field

[0001] This invention relates to the field of fertilizer production technology, specifically to a method for manufacturing a fully water-soluble granular functional fertilizer containing fulvic acid. Background Technology

[0002] Water-soluble fertilizer is a type of multi-element compound fertilizer that dissolves in water. It is a new type of fertilizer that has emerged in recent years. It dissolves rapidly in water, making it easier for crops to absorb, and its absorption and utilization rate is relatively high. This achieves integrated water and fertilizer management, resulting in water, fertilizer, and labor savings. However, most water-soluble fertilizers on the market currently have some problems, such as an unreasonable nitrogen, phosphorus, and potassium ratio, low water solubility, low organic matter content, which hinders the formation of granular structures. Furthermore, because trace elements are not in a chelated state, they are not easily absorbed by crops. Generally, liquid organic nutrients cannot be added to water-soluble fertilizers. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a water-soluble fertilizer with high organic matter content, which facilitates the formation of granular structures, has good water solubility, and is easily absorbed. The chelated trace elements in this water-soluble fertilizer are beneficial for crop absorption, improve fertilizer efficiency, and have a strong and long-lasting effect.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] This invention provides a fully water-soluble granular functional fertilizer containing fulvic acid, comprising the following components by weight: 5-25 parts fulvic acid raw powder, 15-20 parts nitrogen fertilizer, 10-20 parts phosphate fertilizer, 30-40 parts potassium fertilizer, 1-10 parts concentrated molasses fermentation liquid, 1 part polyglutamic acid, 0.1 part polypeptide enzyme, 0.1 part nucleotide, 2 parts chelated calcium, 0.5-1 part chelated magnesium, 0.2-0.5 parts readily available boron, 0.2-0.5 parts chelated zinc, and 0.3-0.5 parts chelated iron.

[0006] Preferably, the nitrogen fertilizer is one or more of urea, ammonium sulfate and ammonium nitrate in any proportion; the phosphate fertilizer is one or more of monoammonium phosphate, diammonium phosphate and ammonium nitrate in any proportion; and the potassium fertilizer is one or more of fully water-soluble potassium sulfate, potassium nitrate, potassium dihydrogen phosphate and potassium chloride in any proportion.

[0007] This invention also provides a method for manufacturing the above-mentioned fulvic acid fully water-soluble granular functional fertilizer, comprising the following steps:

[0008] S1. Grind the fulvic acid raw powder into a fine powder using a grinder;

[0009] S2. Add the humic acid powder obtained in step S1, nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer into the reaction vessel, then inject concentrated molasses fermentation liquid, chelated magnesium, chelated zinc, chelated iron and fast-acting boron, mix, then add polyglutamic acid, nucleotides, peptidase and chelated calcium, and stir evenly.

[0010] S3. After stirring, put the mixture into a dry granulator for granulation, sieve and package to obtain fulvic acid fully water-soluble granular functional fertilizer.

[0011] Preferably, the humic acid raw powder is ground into a fine powder with a mesh size of 200-600 mesh.

[0012] Preferably, in step S2, the stirring time in the reactor is 15-30 min, the rotation speed is set to 50-100 r / min, and the pressure is atmospheric pressure.

[0013] This fertilizer incorporates fully water-soluble fulvic acid powder. Fulvic acid contains abundant trace elements and essential plant nutrients like calcium and magnesium, both inorganic minerals. These raw materials are readily available and inexpensive, avoiding the use of chemically synthesized trace elements and reducing costs. Furthermore, inorganic minerals improve soil structure, increase soil aggregates, enhance fertilizer activity, and improve fertilizer absorption and utilization rates. The water-soluble fertilizer has nano-sized particles, resulting in a larger specific surface area, allowing for excellent dispersion in water, rapid dissolution, and no pipe clogging, making it suitable for fertigation applications.

[0014] This invention adds concentrated molasses fermentation liquid to fertilizer, which can improve barren soil, increase the utilization rate of chemical fertilizers, promote fruit coloring, improve quality, increase the weight of individual fruits, increase soil organic matter, loosen the soil to promote root growth and nourish roots, and increase soil temperature.

[0015] This invention adds nucleotides to fertilizers. Nucleotides can be directly and quickly absorbed, effectively promoting crop reproductive growth, flower bud differentiation, and protein synthesis.

[0016] This invention adds polyglutamic acid to fertilizer, which has the effects of water retention and fertilizer absorption to promote root development, balance soil pH, reduce heavy metals and fertilizer residues in the soil, enhance plant disease resistance and stress resistance, increase yield and extend harvest period.

[0017] This invention adds polypeptide enzymes to fertilizers. Polypeptides can improve the stress resistance of crops, increase crop photosynthesis, and enable crops to enter the vegetative and reproductive growth stages earlier. It can also effectively inhibit the occurrence of soil-borne diseases and reduce the incidence and disease index.

[0018] This invention adds chelated trace elements to fertilizers, which can stabilize the function of biofilms in plants and combine with organic acids to form insoluble calcium salts, thereby relieving the harm to plants caused by excessive accumulation of organic acids. This is beneficial for the synthesis of chlorophyll and various enzyme activators, as well as for the synthesis of auxins in plants, and enhances the photosynthesis of plants.

[0019] The following table compares the mass content of the water-soluble fertilizer of this invention with the national standard:

[0020]

[0021] The data comparison in the table above shows that the water-soluble fertilizer of this invention has a reasonable nitrogen, phosphorus, and potassium ratio, and a high organic matter content after water dissolution, which is conducive to the formation of granular structures. The addition of chelated trace elements to the water-soluble fertilizer further facilitates crop absorption.

[0022] The beneficial effects of this invention are: a reasonable nitrogen, phosphorus, and potassium ratio with high content, which facilitates the formation of granular structures; good water solubility and resistance to clumping; balanced nutrients; chelated trace elements that are easily absorbed by crops; and ease of use. It has the effects of promoting fruit enlargement and coloring, root development and seedling strengthening, soil improvement, disease resistance and yield increase, improved fertilizer efficiency, improved crop quality, water and fertilizer retention, soil activation, environmental protection, flower and fruit preservation, energy conservation and emission reduction, resistance to continuous cropping, and strong and long-lasting effects. Detailed Implementation

[0023] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] A fully water-soluble granular functional fertilizer containing fulvic acid comprises the following components in parts by weight: 5 parts fulvic acid raw powder, 15-20 parts urea, 10-20 parts ammonium nitrate phosphate, 30-40 parts fully water-soluble potassium sulfate, 1 part concentrated molasses fermentation liquid, 1 part polyglutamic acid, 0.1 part polyaspartic acid, 0.1 part nucleotides, 2 parts chelated calcium, 0.5 parts chelated magnesium, 0.2 parts readily available boron, 0.2 parts chelated zinc, and 0.3 parts chelated iron.

[0026] Its preparation method includes the following steps:

[0027] S1. Grind the humic acid raw powder into a fine powder of 200-600 mesh using a grinder;

[0028] S2. Add the fulvic acid powder obtained in step S1, urea, ammonium phosphate, and potassium sulfate to a reaction vessel, then add concentrated molasses fermentation broth, chelated magnesium, chelated zinc, chelated iron, and readily available boron, mix them, then add polyglutamic acid, nucleotides, polyaspartic acid, and chelated calcium, and stir evenly; the stirring time is 15-30 min, the speed is set to 50-100 r / min, and the pressure is atmospheric pressure;

[0029] S3. After stirring, put the mixture into a dry granulator for granulation, sieve and package to obtain fulvic acid fully water-soluble granular functional fertilizer.

[0030] Take 10g of the water-soluble fertilizer obtained in Example 1 of this invention, add 2500ml of purified water to a beaker to dissolve it, stir thoroughly for 3min to completely disperse and dissolve the water-soluble fertilizer, and test after 24h: there is no precipitate after 24h, and the residue is 0.33% when filtered with filter paper with a pore size of 10-30 micrometers. Therefore, the water-soluble fertilizer prepared by the method of this invention has good water solubility.

[0031] Example 2

[0032] A fully water-soluble granular functional fertilizer containing fulvic acid comprises the following components in parts by weight: 10 parts fulvic acid raw powder, 18 parts ammonium sulfate, 15 parts monoammonium phosphate, 35 parts potassium dihydrogen phosphate, 5 parts concentrated molasses fermentation liquid, 1 part polyglutamic acid, 0.1 parts polypeptide enzyme, 0.1 parts nucleotide, 2 parts chelated calcium, 0.8 parts chelated magnesium, 0.3 parts readily available boron, 0.3 parts chelated zinc, and 0.4 parts chelated iron.

[0033] Its manufacturing method is the same as in Example 1.

[0034] Example 3

[0035] A fully water-soluble granular functional fertilizer containing fulvic acid comprises the following components in parts by weight: 25 parts fulvic acid raw powder, 20 parts ammonium nitrate, 20 parts diammonium phosphate, 20 parts potassium nitrate, 20 parts potassium dihydrogen phosphate, 10 parts concentrated molasses fermentation liquid, 1 part polyglutamic acid, 0.1 part polypeptide enzyme, 0.1 part nucleotide, 2 parts chelated calcium, 1 part chelated magnesium, 0.5 parts readily available boron, 0.5 parts chelated zinc, and 0.5 parts chelated iron.

[0036] Its manufacturing method is the same as in Example 1.

[0037] The effects of the water-soluble fertilizer obtained from the example scheme on increasing corn yield in the mountainous areas of Northeast China were analyzed:

[0038] The crop variety being tested is corn.

[0039] Test site: loose soil, slightly sandy, moderately fertile, with a 30-degree slope.

[0040] Fertilization method: Traditional broadcast fertilization is adopted.

[0041] Experimental methods: In sample plot 1, traditional compound fertilizer was applied using the optimal broadcasting method for the year, with a fertilizer application rate of 30 kg / mu; in sample plot 2, water-soluble fertilizer obtained from Example 1 was applied, with a water-soluble fertilizer application rate of 20 kg / mu.

[0042] Field trial results: The average yield of corn in plot 1 was 480 kg / mu, and the average yield of corn in plot 2 was 800 kg / mu.

[0043] Therefore, it can be concluded that the water-soluble fertilizer obtained by the present invention not only disperses and dissolves well in water, but also has a high fertilizer utilization rate and a significant impact on crop yield.

[0044] This experimental group used the product prepared according to this invention to conduct experiments on acidic soil where eggplants were grown for two consecutive years. The control group used commercially available compound fertilizer. The experimental area was 1 acre in both groups. The application rate of the experimental group was 75 kg, and the application rate of the control group was 100 kg. The comparison of the effects is shown in the table below.

[0045] project Yield (kg / mu) Disease incidence rate (%) Soil pH This embodiment 450 1 7.0 control group 300 50 5.0

[0046] Comparative experimental data shows that the water-soluble fertilizer of this invention plays an important role in improving the soil environment, increasing disease resistance and yield, improving fertilizer efficiency, and improving crop quality.

[0047] Using the water-soluble fertilizer formulated in this embodiment, wheat was selected as the test plant, while the control group used general water-soluble fertilizer. The comparison was conducted under the same soil fertility conditions, fertilizer application rate, and field management measures:

[0048] project Embodiments of the present invention control group Number of ears (10,000 ears / mu) 38 32 Number of grains per ear (grains) 37.5 34.2 1000-grain weight (g) 36.6 33.1 Yield (kg / mu) 521.55 362.25

[0049] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for manufacturing a fully water-soluble granular functional fertilizer containing fulvic acid, characterized in that, Includes the following steps: S1. Grind the fulvic acid raw powder into a fine powder of 200-600 mesh; S2. Add the fine powder of fulvic acid, urea, ammonium nitrate phosphate, and fully water-soluble potassium sulfate to the reaction vessel; S3. Inject concentrated molasses fermentation liquid, chelated magnesium, chelated zinc, chelated iron and fast-acting boron into the reaction vessel and carry out the first stirring and mixing. S4. Add polyglutamic acid, nucleotides, peptidase and chelated calcium in sequence, and mix for the second time. S5. Feed the evenly mixed material into a dry granulator for granulation, then sieve and package it. The first stirring speed is 50-100 r / min, and the time is 10-20 minutes; The second stirring speed is 80-120 r / min, and the time is 5-15 minutes.

2. The manufacturing method according to claim 1, characterized in that, The amount of the fulvic acid raw powder used is 5-25 parts by weight.

3. The manufacturing method according to claim 1, characterized in that, The amounts of urea, ammonium nitrate phosphate, and fully water-soluble potassium sulfate are 15-20 parts, 10-20 parts, and 30-40 parts, respectively.

4. The manufacturing method according to claim 1, characterized in that, The amount of the concentrated molasses fermentation liquid used is 1-10 parts.

5. The manufacturing method according to claim 1, characterized in that, The amounts of polyglutamic acid, peptidase, and nucleotides used are 1 part, 0.1 part, and 0.1 part, respectively.

6. The manufacturing method according to claim 1, characterized in that, The amounts of chelated calcium, chelated magnesium, readily available boron, chelated zinc, and chelated iron are 2 parts, 0.5-1 part, 0.2-0.5 parts, 0.2-0.5 parts, and 0.3-0.5 parts, respectively.

7. A fully water-soluble granular functional fertilizer of humic acid prepared by the manufacturing method according to any one of claims 1-6.

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